Metallic pole.



A. J. BATES.

METALLIC POLE.

APPLICATION FILED DEC. 22. I915;

1 00,453. Patented 'O ct. 10, 1916.

UNITED STATES PATENT OFFICE.

ALBERT J. BATES, OF CHICAGO, ILLINOIS, ASSIGNOR TO BATES EXPANDED STEELTRUSS 00., OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

METALLIC POLE.

Specification of Letters Patent.

Patented Oct. 10, 1916.

To all whom it may concern Be it known that I, ALBERT J. BATES, acitizen of the United States, residing at ()hiiago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Metallic Poles, of which the following is aspecification.

This invention relates to metallic poles adapted for use in supportingwires and for a variety of other purposes for which wood and fabricatedmetallic poles have heretofore been employed.

It is the object of my invention to provide a metallic pole of strongand rigid construction, capable of being manufactured from largeintegral units and, therefore, comprising a minimum number of separateparts.

Other objects and advantages of my invention will be apparent as it isbetter understood by reference to the following specification when readin connection with the accompanying drawing illustrating a preferredembodiment thereof in which Figure 1 is a side elevation of a poleaccording to my invention; Fig. 2 is an enlarged side elevationillustrating the details of the invention, portions of the pole beingbroken away, and Fig. 3 is a horizontal section on the line 33 of Fig.2.

Referring to the drawings, 1 and 2 indicate the upper and lower portionsrespectively of the pole. The lower portion 2 comprises a pair oftapered members 3, each of which consists of longitudinal side portions4 having integral flanges 5 and a zigzag integral truss member 6 betweenthe side portions 4. The tapered members 3 are formed from single rolledsections by shearing the web thereof to provide a plurality of staggeredslits after which the section is heated and the flanges 5 are pulledapart by suitable mechanism, which forms no part of the presentinvention, to expand the section and form the integral zigzag trussmember 6. The tapered members 3 are secured together with their flangesabutting by means of rivets 7.

The upper portion 1 of the pole comprises a single member 3, identicalin form and constructed in the same manner as the members 3 and thelower end thereof is sccured to the upper ends of the, members 3 bymeans of plates 8 riveted at 9 to the outer flanges of the upper andlower portions 1 and 2 of the pole.

The pole, as illustrated, is set in a concrete base 10, although this isnot essential and forms no part of the invention. A crossarm 11 issecured, if desired, to the upper portion 1 and is rigidly held theretoby means of braces 12. Where the pole is intended, however, for usesother than for supporting Wires the cross-arm 11 may obviously beomitted.

It will be understood from the foregoing that I have perfected ametallic pole which 1s constructed of three integral units with theaddition of the plates to secure the upper and lower portions together.The pole may be constructed in lengths of sixty feet or more, theseparate units being thirty feet in length, and obviously such a polepossesses numerous advantages over -olvs of the prior art since it ispractically indestructible and hence will last much longer than a woodpole and is much easier to construct than a fabricated pole of similarlength, which would involve a large number of separate parts securedtogether by rivets. WVood poles of great length are extremely scarce andeXpensive and the large amount of work necessary to construct afabricated pole makes such a pole equally if not more expensive.

It will be apparent that various changes may be made in the form,construction and arrangement of the parts without departing from thespirit and scope of the invention or sacrificing any of its materaladvantages, the form hereinbefore described being merely a preferredembodiment thereof.

I claim:

1. A metallic pole comprising a base portion and an upper portion, andmeans for securing said portions together, said base portion comprisinga plurality of flanged members secured together with their flangesabutting, each of said flanged members having zigzag truss elementsintegral with and forming triangles with said flanges and said upperportion comprising a single flanged member having zigzag truss elementsintegral with and forming triangles with the flanges of said member.

2. A metallic pole comprising a base portion and an upper portion, andplates riveted to and connecting said portions. said base portioncomprising two tapered flanged members secured together with theirflanges abutting, each of said flanged members having zigzag trusselements integral with and forming triangles with said flanges and saidupper portion comprising a single tapered flanged member having zigzagtruss elements integral with and forming triangles with the flanges ofsaid member.

3. A metallic pole, comprising a base portion and an upper portion, andmeans for securing said portions together end to end, said base portioncomprising a plurality of tapered flanged members secured together withtheir flanges abutting, each of said flanged members having zigzag trusselements integral with and forming triangles with said flanges and saidupper portion comprising a single tapered flanged member having zigzagtruss elements integral with and forming triangles with the flanges ofsaid member.

ALBERT J. BATES. Witness:

M. A. Knmm.

